Improvement in rotary brick-machines



NITE-D STATES PATENT EEICEo GEoEGE GEANGLE, oE PHILADELPHIA',PENNSYLVANIA.

IMPROVEMENT IN ROTARY BRICK-MACHINES.

Specification forming part of Letters Patent N0. 17,203, dated May5,1857.

had to the accompanying drawings, makinga' part of this specification,in which- Figure 1 isv a vertical transverse section;

Fig. 2, a top view of the cylinder, with a sec` tion ofthe frame whichsupports it; and Fig. 3 a longitudinal section of the cylinder` and itsshaft through the center of the same.

Like letters in the different figures indicate the same objects.

The nature of my invention consists in the peculiar construction,arrangement, and combination of a rotary cylinder open at each end andhaving a partition fixed transversely across the middle, and'also twoseries of molds openingaround the periphery of the same, with astationary bed-piece fixed at each end ofthe frame and projecting withinthe cylinder, so as to serve the purpose of a bottom for each mold ofthe two y series as they are successively passed over the same duringthe rotary motionof the cylinder for the purpose of reducing the cost bydispensing with the hitherto usual separate and ydistinct bottom foreach mold of a rotary brick-machine.

Referring to the drawings, A is the cylinder, B the stationarybed-piece, and C the frame which supports the whole, and which isconstructed in any suitable and substantial manner. The cylinder A, withits partition e, is cast of iron in several pieces, the molds f f beingmade radially through the periphery or shell of the cylinder, so thatthe inner ends of one series shall be opposite to the inner ends of thedivisions between the molds of the other series, and so as to be adaptedfor the alternating motions of two plungers (not shown in the drawings)in a well-known manner, as the said cylinder is rotated in unisontherewith. The under or inner side of the shell of the cylinder, at eachside of the partition e, is turned true, and is parallelwith the upperside of the same, and placed so as to fit accurately in contact with themiddle piece B, the said bed-piece being fixed firmly to the frame andhaving its upper surface curveformed,with a slightly shorter radius thanthat of the inner side of the cylinder, so as to adapt the same to fitclosely to the cylinder immediately around the under parts of each nold,while the said mold is beneath the low a sufficient space, g, betweenthe said bed-piece and cylinder to permit the pressed brick in the saidmold to be so passed over the same without contact therewith after it isthe said rest B in the direction ofthe arrow.

The bricks are discharged from the molds at the lower side of thecylinder upon a carrying-band in the usual manner, by means of asecondary plunger, (not shown in the drawings,) which may be made towork in unison with the main plungers, which condense the clay in themolds by carrying the rods of the said secondary plungers through thevertical grooves h 7L .in the frame, or in any other suitable manner. D

Operation: Clay being placed inthe hopper and alternate stopping andmoving rotation given to the cylinder A in the usual wellknown manner,the bed-piece B forms a bot"- tom to the molds during the time they areunder the hopper and subsequently under the plungers, and then allowsthe pressed brick tact with the said bed-piece B, and thus bricks may berapidly produced from untempered clay by means of this invention withouta separate and distinct bottom for each mold. Y

The expense of constructing and keeping in repairthe movable bottoms,which have heretofore been considered indispensable fior Vthe molds incylinders of this character, is very great, and consequently anyconstruction whereby they may be avoided must be. exceedingly useful andimportant to the trade.

I do not claim the manner of supporting or of operating the cylinder andplungers part of the upper side of the stationary bedf respectiveplunger, and at the same time ali carried by the cylinder from off themiddle of to pass to the place of discharge without cona y mos hereinspecified 'or described, as these have cylinder Aandbed-pieceBbeingeonstructed, been described and used before in othercases; arranged, combined, and operated together, as

but f and for the purpose set forth and described.

.What Iclaim as my invention, and desire to secure by Letters Patent,is-

A cylinder, A, Without movable bottoms to the/molds, in combination witha bed-piece, B, fixed to the frame of the machine so as to serve thepurpose of said bottoms, the said GEORGE CRANGLE.

